Patent · US Expired

Analog telephone subscriber terminal apparatus

US6141416A · kind A · utility

0Cited by

10References

2Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventor

Paul Kunisch · Puchheim, DE

Key dates

Filing date	Aug 29, 1997
Grant date	Oct 31, 2000
Priority date	—
Expiry date	Aug 29, 2017

Classification

Technology area (CPC H)Electricity
CPC primaryH04M1/57
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

An analog telephone subscriber terminal apparatus with means for realizing additional functions is provided. In the on-hook state of the subscriber terminal apparatus, and outside of the idle operating state of the subscriber terminal apparatus, a current supply device that draws current from the subscriber line and is integrated into the terminal apparatus is switched effective for the duration of the reception of data containing the additional functions. The current supply device provides the supply current to the means for realizing the additional functions, but is limited to such an extent that the increased subscriber line loop current that then flows is not indicated as a loop closure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.